package main

import (
	"encoding/json"
	"net/http"
)

type jsonEncodeHandler int

type User struct {
	Firstname string `json:"firstname"`
	Lastname  string `json:"lastname"`
	Age       int    `json:"age"`
}

func (jsonHandler jsonEncodeHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	mariam := User{
		Firstname: "Mariam",
		Lastname:  "Okonkwo",
		Age:       25,
	}
	json.NewEncoder(w).Encode(mariam)
}

func main() {
	var enc jsonEncodeHandler
	http.ListenAndServe("localhost:8080", enc)
}